A.

Fil
lint
hebl
anks
.

1
.Al
lli
vingo
rgani
smsar
emadeupo
f__
__c
ell
___
___
___
.

2.
The_
__c
ell
wal
l__
___pr
ovi
desr
igi
dit
yandpr
ote
cti
ont
othepl
antc
ell
.

3
.Al
lce
ll
ularac
tiv
iti
esar
eco
ntr
oll
edbyt
he_
___
__nuc
leus_
___
_.

4.
The_
_mi
toc
hondr
ia_
___
_iskno
wnast
hepo
wer
hous
eof
thec
ell
.

5
.__
__Ti
ssue_
___
___i
sag
roupo
fce
ll
spe
rfo
rmi
ngas
pec
if
icf
unc
tio
n.

6.
Itwas
___
__Ro
ber
tHo
oke
___
__whoo
bse
rve
dce
ll
sfo
rthef
irs
tti
me.

B.
Mat
cht
hef
oll
owi
ng.

Ans
wer
:(1
)d,
(2)e
,(3
)a,
(4)b,
(5)c

C.
Tic
kthec
orr
ecto
pti
on.

1
.Thec
ell
org
ane
ll
e,whi
chac
tsasas
tor
agebagf
orac
ell
,iskno
wnast
he-

Ans
wer
:vac
uol
e

2.
Hen’
seg
gis
-

Ans
wer
:as
ing
lec
ell

3
.Thenuc
leusi
sse
par
ate
dfr
omt
hec
yto
plas
mbyt
he-

Ans
wer
:nuc
learme
mbr
ane

4.
Whi
cho
fthef
oll
owi
ngwi
llno
tbef
oundi
nane
ggc
ell
,humanl
ive
rce
llandanAmo
eba?

Ans
wer
:ce
llwal
l

5
.Whi
cho
fthef
oll
owi
ngr
epr
ese
ntst
hec
orr
ects
eque
nce
?

Ans
wer
:ce
ll→t
iss
ue→ o
rgan→ o
rgans
yst
em

6.
Whi
ch,
amo
ngs
tthef
oll
owi
ngpai
rs,
canbef
oundo
nlyi
napl
antc
ell
butno
tinanani
mal
cel
l?

Ans
wer
:ce
llwal
landpl
ast
ids
.
D.
Ans
wert
hef
oll
owi
ngque
sti
onsi
nbr
ief
.

1
.Li
stt
he(
mai
n)f
act
orst
hatde
ter
minet
hes
hapeo
fac
ell
.

Ans
wer
:The(
mai
n)f
act
orst
hatde
ter
minet
hes
hapeo
fac
ell
arel
ocat
ionandf
unc
tio
n.

2.
Dis
ting
uis
hbe
twe
enuni
cel
lul
arandmul
ti
cel
lul
aro
rgani
sms
.Gi
vet
woe
xampl
eso
feac
h.

Ans
wer
:(i
)Uni
cel
lul
aro
rgani
smsar
emadeupo
fas
ing
lec
ell
.e.
g.,
Eug
lenaandAmo
eba.

(
ii)Mul
ti
cel
lul
aro
rgani
smsar
emadeupo
fmanyc
ell
s.e
.g.
,HumansandBi
rds

3
.Gi
ver
eas
onsf
ort
hef
oll
owi
ng:

(
a)Thec
ell
isc
all
edt
hes
truc
tur
alandf
unc
tio
nal
uni
tof
lif
e.

Answer
:Al
lorg
anis
msaremadeupofc
ell
s.Acel
lisc
apabl
eof
inde
pende
nte
xis
tenc
e.Duet
othi
s,c
ell
is
cal
le
dthes
truc
tur
alandf
unct
ional
unito
flif
e.

(
b)Pl
antc
ell
sar
emo
rer
igi
dthant
heani
mal
cel
ls
.

Ans
wer
:Ce
llwal
lispr
ese
nti
npl
antc
ell
.Duet
othi
s,pl
antc
ell
sar
emo
rer
igi
dthanani
mal
cel
ls
.

4.
Whi
chc
ell
org
ane
ll
eiskno
wnast
he‘
Powe
rho
useo
fthec
ell
?Whyi
sits
ocal
le
d?

Ans
wer
:Mi
toc
hondr
iai
skno
wnast
hePo
wer
hous
eof
thec
ell
.

Mi
toc
hondr
iaar
ethes
iteofce
ll
ularres
pir
ation.Ener
gyi
spr
oduc
eddur
ingt
hispr
oce
ss.
Duet
othi
s,
mi
toc
hondr
iaar
ecal
le
dt hePowerho
useofthece
ll.

5
.Namet
hec
ell
org
ane
ll
esr
espo
nsi
blef
ori
mpar
tingc
olo
urt
othel
eav
esandf
rui
tso
fapl
ant
.

Answe
r: Chl
oro
plasti
sre
sponsibl
efori
mpartingco
lourt
othel
eav
es.
Chr
omo
plas
tisr
espo
nsi
blef
or
impar
tingcol
ourtoFrui
ts,
flo
we randveg
etable
s.

6.
Whatar
eci
li
aandf
lag
ell
a?Wr
iteo
nes
imi
lar
ityando
nedi
ssi
mil
ari
tybe
twe
ent
het
woo
fthe
m.

Ans
wer
:Ci
li
aandf
lag
ell
aar
eex
tens
ionso
nthec
ell
membr
ane
.

(i
)Simi
lar
ity-The
see
xte
nsi
onhe
lpi
nlo
como
tio
nandc
oll
ect
iono
ffo
odi
nor
gani
smsl
ikeEug
lenaand
Paramo
eci
um.

(
ii)Di
ssi
mil
ari
ty-Ci
li
aar
emo
rei
nnumbe
rs(
nume
rous
)andFl
age
ll
aiss
ing
le
7
.Ifo
nionpee
lcel
lsandchee
kcel
lsar
eobs
erv
edt
hro
ughami
cro
sco
pe,
stat
ethet
womaj
ordi
ff
ere
nce
s
t
hattheo
bse
rveri
slike
lytof
ind.

Ans
wer
:thet
womaj
ordi
ff
ere
nce
sthatt
heo
bse
rve
risl
ike
lyt
ofi
ndar
e-

(
a)I
nOni
onpe
elc
ell
s:

(
i)Ce
ll
sar
ear
rang
edi
nro
ws.

(
ii)Ce
llwal
lispr
ese
nt.

(
b)I
nChe
ekc
ell
s:

(
i)Ce
ll
srando
mlyar
rang
ed.

(
ii)Ce
llwal
lisabs
ent
.

8.
Clas
sif
ythef
oll
owi
ngi
ntoc
ell
s,t
iss
ueando
rgan.

s
kin,
fatc
ell
,RBC,
blo
od,
ear
,mus
cle

Ans
wer
:

(
i)Ce
ll
:Fatc
ell
andRBC.

(
ii)Ti
ssue
:Bl
oodandmus
cle
.

(
iii
)Or
gan:
Ski
nande
ar.

E.
Ans
wert
hef
oll
owi
ngque
sti
ons
.

1
.“Al
lce
ll
sinano
rgani
smdono
thav
ethes
ames
hape
.”

J
ust
if
ytheabo
ves
tat
eme
ntb
ydr
awi
ngatl
eas
tthr
eedi
ff
ere
ntc
ell
type
sfo
undi
nhumanbe
ing
s.

AnswerThree di
ff
ere
ntc
ell
type
sfo
undi
nhuman
bei
ngsare:

Thesef
igure
scle
arlyshowt
hatl
ive
rcel
lisi
rre
gulari
nshape
,fatce
lli
sspher
ical
andmus
clec
ell
is
spi
ndle
-shaped.Thiss
howst
hatal
lce
ll
sinano r
gani
smdono thav
ethesameshape
.
2.
Whe
re,
andho
w,ar
echr
omo
some
sfo
rme
d?St
atet
hei
rsi
gni
fi
canc
e.

Ans
wer
:(i
)Chr
omo
some
sar
efo
rme
dint
henuc
leusdur
ingc
ell
div
isi
on.

(
ii)Whent
hecel
lisr
eadytodi
vide
,thec
hro
mat
in(
innuc
leus
)co
nde
nse
stof
ormt
hic
ker
,thr
ead-
li
ke
(
rodes
hape)c
hromosomes
.

(i
ii
)Chromoso
mesar
ere
spo
nsi
blef
ori
nhe
rit
anc
eof
char
act
ersf
romo
neg
ene
rat
iont
othene
xt
g
enerat
ion.

3.Wit
hthehel
pof
wel
llabe
ll
eddi
agr
ams
,hi
ghl
ightt
hre
edi
ff
ere
nce
sbe
twe
enapl
antc
ell
andan
ani
mal c
ell
.

Ans
wer
:Thr
eedi
ff
ere
nce
sbe
twe
enapl
antc
ell
andanani
mal
cel
lar
e:.

Pl
antCe
ll Ani
mal
cel
l

1
.Ce
llwal
lispr
ese
nt 1
.Ce
llwal
lisabs
ent

2.
Chl
oro
plas
tispr
ese
nt 2.
Chl
oro
plas
tisabs
ent

3
.Vac
uol
eav
eryl
arg
e 3
.Vac
uol
esar
esmal
l

4.
Wri
tet
hef
unc
tio
nspe
rfo
rme
dbyt
hef
oll
owi
ngc
ell
org
ane
ll
es.
Drawt
hedi
agr
amal
so

(
a)Endopl
asmi
cReti
cul
um-I
tisane
two
rko
fme
mbr
ane
s.I
tpr
ovi
desc
hanne
lsf
ort
rans
por
tof
mat
eri
alsi
nacel
l.

(b)Golg
iCompl
ex-Theyar
esac-
li
kestr
uctur
esst
ackedoneabo
vet
heo
the
r.The
yar
einv
olv
edi
nthe
proce
ssi
ngandpackag
ingofmat
eri
alspro
ducedbythec
ell
.

(
c)Nucl
eus-aspe
ciali
sedst
ruct
urei
nthec
ell
s,bo
undbyt
henuc
learme
mbr
ane
;re
spo
nsi
blef
or
c
ontr
oll
ingall
cel
lularact
ivi
ti
es.

(
d)Chro
mo pl
ast
s-The
yar
ere
spo
nsi
blef
ori
mpar
tingc
olo
ur(
othe
rthang
ree
n)t
othedi
ff
ere
ntpar
tso
f
t
hepl
ant.
(
e)Vacuo
les
-Itappe
arsasanemptyspac
eint
hec
yto
plas
m.I
tisg
ene
ral
lyl
arg
einpl
antc
ell
s.I
tst
ore
s
e
xces
sofwate
randwas t
eproduc
ts.

(
f)Mito
chondr
ia-Thes
earerod-
shapedo
rspheri
cals
truct
ures.
Theyarer
espo
nsi
blef
orc
ell
ular
r
espi
rati
onandforge
nerat
ionofene
rgyf
ordif
fe
rentacti
vit
ieso
fli
fe.

5
. Thec
ellmembraneisaver
yimport
antc
ompo
nento
fac
ell
.Ho
wisdamag
etot
hec
ell
membr
ane
l
ikel
ytoimpactt
hefuncti
onsof
thec
ell
?

Ans
wer:Whent
hecel
lmembr
anegetsdamaged,itex
pose
sthecel
l’
sconte
ntstoe
xte
rnal
env
iro
nme
nt.
Thi
sre
sul
tsi
nst
oppageo
fal
lfunc
tio
nso f
thec
e l
l,andev
entual
lytoce
lldeat
h.

6.De
finet
heter
m‘ c
ell
’,f
orplants
/ani
mals.Namethedi
ff
ere
ntorg
ane
ll
est
hatmakeac
ell
.Ex
plai
n
whynoneoft
hesei
scal
ledthestr
uctur
alandfunc
tio
naluni
tofl
if
e.

Answe
r:(
i)Thece
lli
sthebas
icst
ructur
al,
functi
onal
,andbi
olog
icaluni
tofal
lkno
wno r
ganisms.
Ace
ll
ist
hes
malle
stuni
tofli
fe,
andthere
fore
,ce
llsar
eoft
endes
cri
bedasthe“bui
ldi
ngbl
ockso
fli
fe”.

(
ii)Thedif
fer
entorgane
ll
esthatmakeace
llar
enucle
us,
Gol
gic
ompl
ex,
mit
ocho
ndr
ia,
chl
oro
plas
t,
e
ndo pl
asmicret
icul
um,lys
osome,vac
uol
eandribo
some.

(
iii
)Al
lthe
secel
lor
ganel
leswor
ktoget
hertoper
for
mdi f
fer
entfunct
ionso
fthec
ell
.No
neofthe
seis
c
apabl
eofinde
pendente
xist
enc
e.So
,theyarenotc
all
edthest
ructur
alandfunc
tio
naluni
tofl
if
e.